+++ /dev/null
-/* $Id$ */
-
-/***
- This file is part of PulseAudio.
-
- Copyright 2004-2006 Lennart Poettering
- Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB
-
- PulseAudio is free software; you can redistribute it and/or modify
- it under the terms of the GNU Lesser General Public License as published
- by the Free Software Foundation; either version 2 of the License,
- or (at your option) any later version.
-
- PulseAudio is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public License
- along with PulseAudio; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
- USA.
-***/
-
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
-
-#include <sys/soundcard.h>
-#include <sys/ioctl.h>
-#include <stdlib.h>
-#include <sys/stat.h>
-#include <stdio.h>
-#include <assert.h>
-#include <errno.h>
-#include <string.h>
-#include <fcntl.h>
-#include <unistd.h>
-#include <limits.h>
-
-#ifdef HAVE_SYS_MMAN_H
-#include <sys/mman.h>
-#endif
-
-#include <pulse/xmalloc.h>
-#include <pulse/util.h>
-
-#include <pulsecore/core-error.h>
-#include <pulsecore/iochannel.h>
-#include <pulsecore/sink.h>
-#include <pulsecore/source.h>
-#include <pulsecore/module.h>
-#include <pulsecore/sample-util.h>
-#include <pulsecore/core-util.h>
-#include <pulsecore/modargs.h>
-#include <pulsecore/log.h>
-
-#include "oss-util.h"
-#include "module-oss-mmap-symdef.h"
-
-PA_MODULE_AUTHOR("Lennart Poettering")
-PA_MODULE_DESCRIPTION("OSS Sink/Source (mmap)")
-PA_MODULE_VERSION(PACKAGE_VERSION)
-PA_MODULE_USAGE(
- "sink_name=<name for the sink> "
- "source_name=<name for the source> "
- "device=<OSS device> "
- "record=<enable source?> "
- "playback=<enable sink?> "
- "format=<sample format> "
- "channels=<number of channels> "
- "rate=<sample rate> "
- "fragments=<number of fragments> "
- "fragment_size=<fragment size> "
- "channel_map=<channel map>")
-
-struct userdata {
- pa_sink *sink;
- pa_source *source;
- pa_core *core;
- pa_sample_spec sample_spec;
-
- size_t in_fragment_size, out_fragment_size;
- unsigned in_fragments, out_fragments;
- unsigned out_blocks_saved, in_blocks_saved;
-
- int fd;
-
- void *in_mmap, *out_mmap;
- size_t in_mmap_length, out_mmap_length;
-
- pa_io_event *io_event;
-
- pa_memblock **in_memblocks, **out_memblocks;
- unsigned out_current, in_current;
- pa_module *module;
-};
-
-static const char* const valid_modargs[] = {
- "sink_name",
- "source_name",
- "device",
- "record",
- "playback",
- "fragments",
- "fragment_size",
- "format",
- "rate",
- "channels",
- "channel_map",
- NULL
-};
-
-#define DEFAULT_DEVICE "/dev/dsp"
-#define DEFAULT_NFRAGS 12
-#define DEFAULT_FRAGSIZE 1024
-
-static void update_usage(struct userdata *u) {
- pa_module_set_used(u->module,
- (u->sink ? pa_sink_used_by(u->sink) : 0) +
- (u->source ? pa_source_used_by(u->source) : 0));
-}
-
-static void clear_up(struct userdata *u) {
- assert(u);
-
- if (u->sink) {
- pa_sink_disconnect(u->sink);
- pa_sink_unref(u->sink);
- u->sink = NULL;
- }
-
- if (u->source) {
- pa_source_disconnect(u->source);
- pa_source_unref(u->source);
- u->source = NULL;
- }
-
- if (u->in_mmap && u->in_mmap != MAP_FAILED) {
- munmap(u->in_mmap, u->in_mmap_length);
- u->in_mmap = NULL;
- }
-
- if (u->out_mmap && u->out_mmap != MAP_FAILED) {
- munmap(u->out_mmap, u->out_mmap_length);
- u->out_mmap = NULL;
- }
-
- if (u->io_event) {
- u->core->mainloop->io_free(u->io_event);
- u->io_event = NULL;
- }
-
- if (u->fd >= 0) {
- close(u->fd);
- u->fd = -1;
- }
-}
-
-static void out_fill_memblocks(struct userdata *u, unsigned n) {
- assert(u && u->out_memblocks);
-
- while (n > 0) {
- pa_memchunk chunk;
-
- if (u->out_memblocks[u->out_current])
- pa_memblock_unref_fixed(u->out_memblocks[u->out_current]);
-
- chunk.memblock = u->out_memblocks[u->out_current] =
- pa_memblock_new_fixed(
- u->core->mempool,
- (uint8_t*) u->out_mmap+u->out_fragment_size*u->out_current,
- u->out_fragment_size,
- 1);
- assert(chunk.memblock);
- chunk.length = pa_memblock_get_length(chunk.memblock);
- chunk.index = 0;
-
- pa_sink_render_into_full(u->sink, &chunk);
-
- u->out_current++;
- while (u->out_current >= u->out_fragments)
- u->out_current -= u->out_fragments;
-
- n--;
- }
-}
-
-static void do_write(struct userdata *u) {
- struct count_info info;
- assert(u && u->sink);
-
- update_usage(u);
-
- if (ioctl(u->fd, SNDCTL_DSP_GETOPTR, &info) < 0) {
- pa_log("SNDCTL_DSP_GETOPTR: %s", pa_cstrerror(errno));
-
- clear_up(u);
- pa_module_unload_request(u->module);
- return;
- }
-
- info.blocks += u->out_blocks_saved;
- u->out_blocks_saved = 0;
-
- if (!info.blocks)
- return;
-
- out_fill_memblocks(u, info.blocks);
-}
-
-static void in_post_memblocks(struct userdata *u, unsigned n) {
- assert(u && u->in_memblocks);
-
- while (n > 0) {
- pa_memchunk chunk;
-
- if (!u->in_memblocks[u->in_current]) {
- chunk.memblock = u->in_memblocks[u->in_current] = pa_memblock_new_fixed(u->core->mempool, (uint8_t*) u->in_mmap+u->in_fragment_size*u->in_current, u->in_fragment_size, 1);
- chunk.length = pa_memblock_get_length(chunk.memblock);
- chunk.index = 0;
-
- pa_source_post(u->source, &chunk);
- }
-
- u->in_current++;
- while (u->in_current >= u->in_fragments)
- u->in_current -= u->in_fragments;
-
- n--;
- }
-}
-
-static void in_clear_memblocks(struct userdata*u, unsigned n) {
- unsigned i = u->in_current;
- assert(u && u->in_memblocks);
-
- if (n > u->in_fragments)
- n = u->in_fragments;
-
- while (n > 0) {
- if (u->in_memblocks[i]) {
- pa_memblock_unref_fixed(u->in_memblocks[i]);
- u->in_memblocks[i] = NULL;
- }
-
- i++;
- while (i >= u->in_fragments)
- i -= u->in_fragments;
-
- n--;
- }
-}
-
-static void do_read(struct userdata *u) {
- struct count_info info;
- assert(u && u->source);
-
- update_usage(u);
-
- if (ioctl(u->fd, SNDCTL_DSP_GETIPTR, &info) < 0) {
- pa_log("SNDCTL_DSP_GETIPTR: %s", pa_cstrerror(errno));
-
- clear_up(u);
- pa_module_unload_request(u->module);
- return;
- }
-
- info.blocks += u->in_blocks_saved;
- u->in_blocks_saved = 0;
-
- if (!info.blocks)
- return;
-
- in_post_memblocks(u, info.blocks);
- in_clear_memblocks(u, u->in_fragments/2);
-}
-
-static void io_callback(pa_mainloop_api *m, pa_io_event *e, PA_GCC_UNUSED int fd, pa_io_event_flags_t f, void *userdata) {
- struct userdata *u = userdata;
- assert (u && u->core->mainloop == m && u->io_event == e);
-
- if (f & PA_IO_EVENT_ERROR) {
- clear_up(u);
- pa_module_unload_request(u->module);
- return;
- }
-
- if (f & PA_IO_EVENT_INPUT)
- do_read(u);
- if (f & PA_IO_EVENT_OUTPUT)
- do_write(u);
-}
-
-static pa_usec_t sink_get_latency_cb(pa_sink *s) {
- struct userdata *u = s->userdata;
- struct count_info info;
- size_t bpos, n, total;
- assert(s && u);
-
- if (ioctl(u->fd, SNDCTL_DSP_GETOPTR, &info) < 0) {
- pa_log("SNDCTL_DSP_GETOPTR: %s", pa_cstrerror(errno));
- return 0;
- }
-
- u->out_blocks_saved += info.blocks;
-
- total = u->out_fragments * u->out_fragment_size;
- bpos = ((u->out_current + u->out_blocks_saved) * u->out_fragment_size) % total;
-
- if (bpos <= (size_t) info.ptr)
- n = total - (info.ptr - bpos);
- else
- n = bpos - info.ptr;
-
-/* pa_log("n = %u, bpos = %u, ptr = %u, total=%u, fragsize = %u, n_frags = %u\n", n, bpos, (unsigned) info.ptr, total, u->out_fragment_size, u->out_fragments); */
-
- return pa_bytes_to_usec(n, &s->sample_spec);
-}
-
-static pa_usec_t source_get_latency_cb(pa_source *s) {
- struct userdata *u = s->userdata;
- struct count_info info;
- size_t bpos, n, total;
- assert(s && u);
-
- if (ioctl(u->fd, SNDCTL_DSP_GETIPTR, &info) < 0) {
- pa_log("SNDCTL_DSP_GETIPTR: %s", pa_cstrerror(errno));
- return 0;
- }
-
- u->in_blocks_saved += info.blocks;
-
- total = u->in_fragments * u->in_fragment_size;
- bpos = ((u->in_current + u->in_blocks_saved) * u->in_fragment_size) % total;
-
- if (bpos <= (size_t) info.ptr)
- n = info.ptr - bpos;
- else
- n = (u->in_fragments * u->in_fragment_size) - bpos + info.ptr;
-
-/* pa_log("n = %u, bpos = %u, ptr = %u, total=%u, fragsize = %u, n_frags = %u\n", n, bpos, (unsigned) info.ptr, total, u->in_fragment_size, u->in_fragments); */
-
- return pa_bytes_to_usec(n, &s->sample_spec);
-}
-
-static int sink_get_hw_volume(pa_sink *s) {
- struct userdata *u = s->userdata;
-
- if (pa_oss_get_pcm_volume(u->fd, &s->sample_spec, &s->hw_volume) < 0) {
- pa_log_info("device doesn't support reading mixer settings: %s", pa_cstrerror(errno));
- s->get_hw_volume = NULL;
- return -1;
- }
-
- return 0;
-}
-
-static int sink_set_hw_volume(pa_sink *s) {
- struct userdata *u = s->userdata;
-
- if (pa_oss_set_pcm_volume(u->fd, &s->sample_spec, &s->hw_volume) < 0) {
- pa_log_info("device doesn't support writing mixer settings: %s", pa_cstrerror(errno));
- s->set_hw_volume = NULL;
- return -1;
- }
-
- return 0;
-}
-
-static int source_get_hw_volume(pa_source *s) {
- struct userdata *u = s->userdata;
-
- if (pa_oss_get_input_volume(u->fd, &s->sample_spec, &s->hw_volume) < 0) {
- pa_log_info("device doesn't support reading mixer settings: %s", pa_cstrerror(errno));
- s->get_hw_volume = NULL;
- return -1;
- }
-
- return 0;
-}
-
-static int source_set_hw_volume(pa_source *s) {
- struct userdata *u = s->userdata;
-
- if (pa_oss_set_input_volume(u->fd, &s->sample_spec, &s->hw_volume) < 0) {
- pa_log_info("device doesn't support writing mixer settings: %s", pa_cstrerror(errno));
- s->set_hw_volume = NULL;
- return -1;
- }
-
- return 0;
-}
-
-int pa__init(pa_core *c, pa_module*m) {
- struct audio_buf_info info;
- struct userdata *u = NULL;
- const char *p;
- int nfrags, frag_size;
- int mode, caps;
- int enable_bits = 0, zero = 0;
- int playback = 1, record = 1;
- pa_modargs *ma = NULL;
- char hwdesc[64], *t;
- pa_channel_map map;
- const char *name;
- char *name_buf = NULL;
- int namereg_fail;
-
- assert(c);
- assert(m);
-
- m->userdata = u = pa_xnew0(struct userdata, 1);
- u->module = m;
- u->fd = -1;
- u->core = c;
-
- if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
- pa_log("failed to parse module arguments.");
- goto fail;
- }
-
- if (pa_modargs_get_value_boolean(ma, "record", &record) < 0 || pa_modargs_get_value_boolean(ma, "playback", &playback) < 0) {
- pa_log("record= and playback= expect numeric arguments.");
- goto fail;
- }
-
- if (!playback && !record) {
- pa_log("neither playback nor record enabled for device.");
- goto fail;
- }
-
- mode = (playback&&record) ? O_RDWR : (playback ? O_WRONLY : (record ? O_RDONLY : 0));
-
- nfrags = DEFAULT_NFRAGS;
- frag_size = DEFAULT_FRAGSIZE;
- if (pa_modargs_get_value_s32(ma, "fragments", &nfrags) < 0 || pa_modargs_get_value_s32(ma, "fragment_size", &frag_size) < 0) {
- pa_log("failed to parse fragments arguments");
- goto fail;
- }
-
- u->sample_spec = c->default_sample_spec;
- if (pa_modargs_get_sample_spec_and_channel_map(ma, &u->sample_spec, &map, PA_CHANNEL_MAP_OSS) < 0) {
- pa_log("failed to parse sample specification or channel map");
- goto fail;
- }
-
- if ((u->fd = pa_oss_open(p = pa_modargs_get_value(ma, "device", DEFAULT_DEVICE), &mode, &caps)) < 0)
- goto fail;
-
- if (!(caps & DSP_CAP_MMAP) || !(caps & DSP_CAP_TRIGGER)) {
- pa_log("OSS device not mmap capable.");
- goto fail;
- }
-
- pa_log_info("device opened in %s mode.", mode == O_WRONLY ? "O_WRONLY" : (mode == O_RDONLY ? "O_RDONLY" : "O_RDWR"));
-
- if (pa_oss_get_hw_description(p, hwdesc, sizeof(hwdesc)) >= 0)
- pa_log_info("hardware name is '%s'.", hwdesc);
- else
- hwdesc[0] = 0;
-
- if (nfrags >= 2 && frag_size >= 1)
- if (pa_oss_set_fragments(u->fd, nfrags, frag_size) < 0)
- goto fail;
-
- if (pa_oss_auto_format(u->fd, &u->sample_spec) < 0)
- goto fail;
-
- if (mode != O_WRONLY) {
- if (ioctl(u->fd, SNDCTL_DSP_GETISPACE, &info) < 0) {
- pa_log("SNDCTL_DSP_GETISPACE: %s", pa_cstrerror(errno));
- goto fail;
- }
-
- pa_log_info("input -- %u fragments of size %u.", info.fragstotal, info.fragsize);
- u->in_mmap_length = (u->in_fragment_size = info.fragsize) * (u->in_fragments = info.fragstotal);
-
- if ((u->in_mmap = mmap(NULL, u->in_mmap_length, PROT_READ, MAP_SHARED, u->fd, 0)) == MAP_FAILED) {
- if (mode == O_RDWR) {
- pa_log("mmap failed for input. Changing to O_WRONLY mode.");
- mode = O_WRONLY;
- } else {
- pa_log("mmap(): %s", pa_cstrerror(errno));
- goto fail;
- }
- } else {
- if ((name = pa_modargs_get_value(ma, "source_name", NULL)))
- namereg_fail = 1;
- else {
- name = name_buf = pa_sprintf_malloc("oss_input.%s", pa_path_get_filename(p));
- namereg_fail = 0;
- }
-
- if (!(u->source = pa_source_new(c, __FILE__, name, namereg_fail, &u->sample_spec, &map)))
- goto fail;
-
- u->source->userdata = u;
- u->source->get_latency = source_get_latency_cb;
- u->source->get_hw_volume = source_get_hw_volume;
- u->source->set_hw_volume = source_set_hw_volume;
- pa_source_set_owner(u->source, m);
- pa_source_set_description(u->source, t = pa_sprintf_malloc("OSS PCM/mmap() on %s%s%s%s",
- p,
- hwdesc[0] ? " (" : "",
- hwdesc[0] ? hwdesc : "",
- hwdesc[0] ? ")" : ""));
- pa_xfree(t);
- u->source->is_hardware = 1;
-
- u->in_memblocks = pa_xnew0(pa_memblock*, u->in_fragments);
-
- enable_bits |= PCM_ENABLE_INPUT;
- }
- }
-
- pa_xfree(name_buf);
- name_buf = NULL;
-
- if (mode != O_RDONLY) {
- if (ioctl(u->fd, SNDCTL_DSP_GETOSPACE, &info) < 0) {
- pa_log("SNDCTL_DSP_GETOSPACE: %s", pa_cstrerror(errno));
- goto fail;
- }
-
- pa_log_info("output -- %u fragments of size %u.", info.fragstotal, info.fragsize);
- u->out_mmap_length = (u->out_fragment_size = info.fragsize) * (u->out_fragments = info.fragstotal);
-
- if ((u->out_mmap = mmap(NULL, u->out_mmap_length, PROT_WRITE, MAP_SHARED, u->fd, 0)) == MAP_FAILED) {
- if (mode == O_RDWR) {
- pa_log("mmap filed for output. Changing to O_RDONLY mode.");
- mode = O_RDONLY;
- } else {
- pa_log("mmap(): %s", pa_cstrerror(errno));
- goto fail;
- }
- } else {
- pa_silence_memory(u->out_mmap, u->out_mmap_length, &u->sample_spec);
-
- if ((name = pa_modargs_get_value(ma, "sink_name", NULL)))
- namereg_fail = 1;
- else {
- name = name_buf = pa_sprintf_malloc("oss_output.%s", pa_path_get_filename(p));
- namereg_fail = 0;
- }
-
- if (!(u->sink = pa_sink_new(c, __FILE__, name, namereg_fail, &u->sample_spec, &map)))
- goto fail;
-
- u->sink->get_latency = sink_get_latency_cb;
- u->sink->get_hw_volume = sink_get_hw_volume;
- u->sink->set_hw_volume = sink_set_hw_volume;
- u->sink->userdata = u;
- pa_sink_set_owner(u->sink, m);
- pa_sink_set_description(u->sink, t = pa_sprintf_malloc("OSS PCM/mmap() on %s%s%s%s",
- p,
- hwdesc[0] ? " (" : "",
- hwdesc[0] ? hwdesc : "",
- hwdesc[0] ? ")" : ""));
- pa_xfree(t);
-
- u->sink->is_hardware = 1;
- u->out_memblocks = pa_xmalloc0(sizeof(struct memblock *)*u->out_fragments);
-
- enable_bits |= PCM_ENABLE_OUTPUT;
- }
- }
-
- pa_xfree(name_buf);
- name_buf = NULL;
-
- zero = 0;
- if (ioctl(u->fd, SNDCTL_DSP_SETTRIGGER, &zero) < 0) {
- pa_log("SNDCTL_DSP_SETTRIGGER: %s", pa_cstrerror(errno));
- goto fail;
- }
-
- if (ioctl(u->fd, SNDCTL_DSP_SETTRIGGER, &enable_bits) < 0) {
- pa_log("SNDCTL_DSP_SETTRIGGER: %s", pa_cstrerror(errno));
- goto fail;
- }
-
- assert(u->source || u->sink);
-
- u->io_event = c->mainloop->io_new(c->mainloop, u->fd, (u->source ? PA_IO_EVENT_INPUT : 0) | (u->sink ? PA_IO_EVENT_OUTPUT : 0), io_callback, u);
- assert(u->io_event);
-
- pa_modargs_free(ma);
-
- /* Read mixer settings */
- if (u->source)
- source_get_hw_volume(u->source);
- if (u->sink)
- sink_get_hw_volume(u->sink);
-
- return 0;
-
-fail:
- pa__done(c, m);
-
- if (ma)
- pa_modargs_free(ma);
-
- pa_xfree(name_buf);
-
- return -1;
-}
-
-void pa__done(pa_core *c, pa_module*m) {
- struct userdata *u;
-
- assert(c);
- assert(m);
-
- if (!(u = m->userdata))
- return;
-
- clear_up(u);
-
- if (u->out_memblocks) {
- unsigned i;
- for (i = 0; i < u->out_fragments; i++)
- if (u->out_memblocks[i])
- pa_memblock_unref_fixed(u->out_memblocks[i]);
- pa_xfree(u->out_memblocks);
- }
-
- if (u->in_memblocks) {
- unsigned i;
- for (i = 0; i < u->in_fragments; i++)
- if (u->in_memblocks[i])
- pa_memblock_unref_fixed(u->in_memblocks[i]);
- pa_xfree(u->in_memblocks);
- }
-
- pa_xfree(u);
-}
projects / platform / upstream / pulseaudio.git / commitdiff